Nite Ize S-Biner SlideLock Locking Stainless Steel Carabiner (Black, #2)

Very secure and lockable perfect for my rucksack. Worth the value in money.

Small but really handy, well made too.

Brilliant. Its the locks on the springs that are clever and effective. Size difficult to gauge from the photos (should have looked at the tech spec) so got one slightly small (#2) and one (from another source) rather large (#4). Obviously I need a #3 to fit on my belt loop.

I initially purchased the standard version but found them too unreliable. After some searching, I came across these, and I couldn't be happier. They have a clever design where you can push a small plastic tab down to lock the opening, making them much more secure. I use these to attach a small EDC light to my belt for nighttime use, and they perform flawlessly.

After ≈ two weeks of holding a water bottle to a bag (high use though well under the 10 lbs limit), the gates broke off. Before this, the gates did repeatedly lock on the wrong side of the bar which required fixing with brute force.I'd just get a normal carabiner.

Bought this as an extra measure of security on a backpack zipper. Works well and I'm sure that if someone decides to try and help themselves to my backpack contents I'll notice.

Size 2.Good SMALL carabiner, with a locking function.CHECK THE SIZE, as this is quite small.this 'newer' version has a 'locking feature'; in actuality this is just two tiny slide over pieces of plastic that slide down and prevent the carabiner from being un clipped accidentally; a useful feature, but tiny and fiddly and certainly cannot be used with gloves.Rated to 4.5kg (NOT for climbing) so well made.Double sided for clipping on AND carrying something else.

Very good for the price. Still not very strong though, I wouldn't trust it at my job as I do manual work. And its also a bit fiddly.I splashed out in the end and bought the bico key klipz, that's expensive but worth every penny